It looks like ASUS still improving firmwares for old routers. Last original firmware L2TP speed tested. Original FW_RT_N16_3004354 (2013-03-22) http://ru.asus.com/Networks/Wireless_Routers/RTN16 Alternative 1.9.2.7-rtn-r4923 (2013-03-16) http://code.google.com/p/wl500g/ upload speed not limited by router performance, but rather by Kyivstar (ISP) at prime time.